SH7080 Datasheet, PDF (71/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 1 Overview
1.4 Pin Functions
Table 1.2 summarizes the pin functions.
Table 1.2 Pin Functions
Classification
Power supply
Clock
Operating mode
control
Symbol
I/O Name
Function
Vcc
I
Power supply Power supply pins. Connect all Vcc
pins to the system. There will be no
operation if any pins are open.
Vss
I
Ground
Ground pin. Connect all Vss pins to
the system power supply (0V). There
will be no operation if any pins are
open.
VCL
O Power supply for External capacitance pins for internal
internal power- power-down power supply. Connect
down
these pins to Vss via a 0.47 µF
capacitor (placed close to the pins).
PLLVss
I
PLL ground
Ground pin for the on-chip PLL
oscillator
EXTAL
I
External clock Connected to a crystal resonator.
An external clock signal may also be
input to the EXTAL pin.
XTAL
O Crystal
Connected to a crystal resonator.
CK
O System clock Supplies the system clock to external
devices.
MD1, MD0 I
Mode set
Sets the operating mode. Do not
change values on these pins during
operation.
FWE
I
Flash memory Pin for flash memory. Flash memory
write enable
can be protected against
programming or erasure through this
pin.
Rev. 3.00 May 17, 2007 Page 13 of 1582
REJ09B0181-0300